AT506196B1 - ADJUSTMENT MECHANISM FOR MOVING A HIGH-MOVABLE FLAP OF A FURNITURE - Google Patents

Abstract

Adjusting mechanism (5) for moving a highly movable flap (4) of a piece of furniture (1) with a base body (5a) to be fastened to a furniture body (3), wherein an adjusting arm (6) for moving the flap (4) on the one hand on a bearing axis (A) of the base body (5a) and on the other hand on a bearing axis (B) on a flap (4) to be fastened fitting part (9) is mounted and wherein an additional control arm (7) for moving the flap (4) is provided wherein during the movement of the actuating arm (6), the effective lever arm length (L) of the control arm (7) is variable, whereby the effective Hebelarmlänge (L) of the control arm (7) when opening the actuating arm (6) shortens.

Description

Austrian Patent Office AT506196B1 2010-10-15

The present invention relates to an adjusting mechanism for moving a highly movable flap of a piece of furniture, with a base body to be fastened to a furniture body, wherein an actuating arm for moving the flap on the one hand to a bearing axis of the body and on the other hand to a bearing axis at one the flap to be mounted fitting part is mounted and wherein an additional control arm is provided for moving the flap, wherein during the movement of the actuating arm, the effective lever arm length of the control arm is variable.

Furthermore, the invention relates to a piece of furniture with an actuating mechanism of the type to be described, which is provided for moving a highly movable flap.

Such adjusting mechanisms are used for moving furniture flaps, which are adjustably mounted between a cabinet compartment in a furniture body closing vertical position and an upwardly moved open position. When opening the door, there is sometimes a considerable lifting movement in relation to the front side of the furniture body, which is perceived as unpleasant for the user, since on the one hand relatively much space must be provided and on the other hand there is a risk that the user located in front of the cabinet body by Excessive swinging of the flap can cause injury to the head. The user will therefore intuitively back out when opening the flap when the flap moves at the height of the head.

From EP 0 952 290 A2 and EP 1 785 565 A2 flap fittings for upwardly opening furniture flaps have become known, wherein a spring-loaded actuator arm and a control mechanism in the form of two hingedly connected articulated levers are provided whose effective Hebelarmlänge the opening movement of the flap is increased.

Object of the present invention is therefore to provide an actuating mechanism of the type mentioned with improved kinematics to avoid the above-mentioned disadvantages as far as possible.

This is inventively achieved in an advantageous embodiment that shortens the effective lever arm length of the control arm when opening the actuator arm.

The basic idea of the present invention is thus to shorten the effective lever arm length formed by the control arm during the opening movement of the flap. The effective lever arm length of the control arm can be designed as a function of the angle of rotation of the movement of the flap force-moderately supporting actuator arm. In this context, in particular a non-linear course can be provided, namely that the effective lever arm length of the control arm in a first - adjoining the closed position - opening angle range of the actuating arm changes less than in a subsequent second opening angle range until the complete open position of the actuating arm enough.

In this way, it is possible, for example, to move the flap parallel to itself (ie substantially parallel to the end face of the furniture body) in an outgoing from the full closed position first pivot area and then fold over the furniture body away, the flap in one of the fully open position immediately upstream region through a relatively pronounced change in length of the control arm undergoes a correspondingly strong pivoting movement.

Due to the proposed construction, on the one hand, the lifting movement of the flap with respect to the end face of the furniture body can be kept low, on the other hand, it is also possible that the flap by a correspondingly strong pivoting movement in the fully open position immediately upstream area not the maximum ceiling height achieved so that the flap in its open position for the user is still easy to operate. A further advantage lies in the fact that with motor-driven flap-in particular during the closing movement-the risk is reduced that the lower edge of the flap hits the user on the head. The control arm is on the one hand pivotally connected to a body side bearing axis on the furniture body and on the other hand pivotally connected to the flap. The invention now provides to change the relative distance between the body-side bearing axis of the control arm and the flap-side bearing axis of the control arm in the course of Ver-pivoting movement of the actuating arm, preferably to shorten.

Constructively, the embodiment may be such that the control arm has at least two relatively movable parts. Here, the relative mobility is to be understood that all storage options of at least two parts are included to each other, which can bring about a shortening of the distance of the body side and the flap side bearing axis of the control arm during the pivoting movement of the flap.

In a possible embodiment of the invention can be provided that the at least two parts are connected to each other via a hinge axis, wherein an additional intermediate lever is provided, which is effective between the hinge axis of the at least two parts and a hinge axis on the actuator arm. The additional intermediate lever assumes the function of a positive control, by which the two articulated lever parts hinged together during the opening movement of the actuating arm. Here, the lever parts - starting from the full closed position of the actuating arm-initially only slightly angled, but in a second pivoting range up to the full open position of the actuating arm relatively strong kinked, whereby the desired opening course of the flap can be realized.

According to a further embodiment of the invention can be provided that the relative position of the at least two parts to each other by a drive device, preferably an electric drive, is variable. In an expedient development of the invention can be provided that the electric drive via a transmission mechanism causes an adjustment of the relative position of the at least two parts to each other. Here, the electric drive for changing the distance between the body-side bearing axis and the flap-side bearing axis of the control arm can be controlled so that the electric drive in a first rotational angle range of the actuating arm, starting from its full closed position, either not or only slightly moved while in a fully open position of the actuating arm immediately upstream opening angle range of the actuating arm a more pronounced relative shortening of the control arm is made.

According to a first variant of the invention, the control arm may have a body-side bearing axis, which is arranged on or in a base body of the actuating mechanism. Alternatively, the bearing axis of the control arm can also be arranged on a separate from the main body of the actuating mechanism bearing part on the furniture. In this case, the body-side bearing axis of the control arm can be arranged in the uppermost region of the furniture body and preferably in the region of the front side of the furniture body. The body-side bearing axis and the flap-side bearing axis of the actuating arm thus form a four-bar linkage with the body side bearing axis and the flap side bearing axis of the control arm, which can be increased by an arrangement of the body side bearing axis in the top and foremost area of the furniture body, the surface formed by the four-bar linkage, resulting in favorable leverage to move the flap.

Further details and advantages of the present invention will become apparent from the following description of the figures. 1 shows a perspective view of a furniture mounted on a wall with an adjusting mechanism for moving a highly movable flap, FIG. 2 shows the arrangement according to FIG. 1 in a side view, [0018] FIG FIGS. 3a-3d show the opening course of the flap in time sequences; FIGS. 4a-4c show an alternative exemplary embodiment with a control arm which has a control arm

5 shows a perspective view of the control arm with a motor-driven spindle drive, FIG. 6 shows a diagram of the curve shape of the effective lever arm length of the control arm as a function of the opening angle of the actuating arm.

Fig. 1 shows a perspective view of a wall-mounted on a cabinet 2 cabinet-shaped furniture, which is particularly used as a kitchen cupboard. The furniture 1 comprises a furniture body 3 to be fastened to the wall 2, on the side wall of which an adjusting mechanism 5 according to the invention for adjusting a highly movable flap 4 is mounted. The flap 4 assumes a substantially vertical position in the closed position and is movable starting from this vertical position into an upwardly adjusted open position. For clarity, only a part of the flap 4 and the furniture body 3 is shown. On the inside of the opposite side wall of the furniture 1, an adjusting mechanism 5 can also be arranged. The adjusting mechanism 5 has an actuating arm 6, which can be acted upon by a drive device (spring device and / or electric motor) not shown in detail. The actuating arm 6 therefore supports the movement of the flap 4 in terms of power. In addition to the actuating arm 6, a control arm 7 is provided which influences the movement characteristic of the flap 4 during its movement path. During the course of the opening of the flap 4, in conventional solutions, a considerable lift-off movement of the flap 4 with respect to the front side of the furniture body 3 can occur, through which the user runs the risk of injuring himself. The invention now proposes to shorten the effective lever arm length of the control arm 7 during the opening course of the flap 4, which is brought about by the intermediate lever 8. The intermediate lever 8 is effective between the actuator arm 6 and the control arm 7, so that thereby a forced adjustment of the control arm 7 is realized, as will be described in more detail in the following figures.

Fig. 2 shows the arrangement of FIG. 1 in a side view. On at least one side wall of the furniture body 3, an adjusting mechanism 5 is mounted, which comprises a non-illustrated drive device (spring device and / or electric motor) for acting on the actuating arm 6. The actuating arm 6 is arranged on the body side on or in a base body 5a on a bearing axis A, the other distal end of the actuating arm 6 is pivotally attached to the flap-side fitting part 9 on a bearing axis B. In addition to the actuating arm 6, a control arm 7 is provided which, in the exemplary embodiment shown, comprises two parts 7a and 7b articulated to one another on the articulation axis F. The control arm 7 with the two parts 7a, 7b thus supports the body side on the bearing axis C and on the flap side on the fitting part 9 on the bearing axis D. A preferably cranked intermediate lever 8 connects the control arm 6 on the hinge axis E with the control arm 7 on the hinge axis F. Starting from the complete closed position of the flap 4, the two parts 7a, 7b of the control arm 7 are only slightly bent, whereby a substantially parallel guidance of the flap with respect to the end face of the furniture body 3 is possible. From a certain pivot angle of the actuator arm 6 (for example, from 70 ° with respect to the vertical) takes place by the intermediate lever 8 a more pronounced buckling of the two parts 7a, 7b, whereby the flap 4 performs a correspondingly strong pivoting movement and over the furniture body 3 away to the rear is pivotable.

3a to 3d show the course of the opening of the flap 4 in time sequences. In Fig. 3a, the flap 4 is shown in the fully closed position. On a side wall of the furniture body 3 of the adjusting mechanism 5 is fixed with its the movement of the flap 4 assisting actuator 6. From the control arm 7 of the part 7b can be seen, which is pivotally mounted on the bearing axis D of the valve-side fitting part 9. Reference numeral C denotes the body-side bearing axis of the control arm 7, which is denable either on the main body 5a of the actuating mechanism 5 or else separately on the furniture body 3 of the control armature 313. Of importance is drawn in Fig. 5b relative distance S of the two bearing axes C and D of the control arm 7, which is reduced in size in the course of the opening operation of the flap 4.

Fig. 3b shows the flap 4 in a slight open position, wherein the flap 4 is bewegebar in a first pivoting area substantially parallel to itself and performs a contrasting furniture body 3 movement. The arranged on the hinge axis E on the actuating arm 6 intermediate lever 8 causes in this first pivoting range of the flap 4 only an insignificant buckling of the two parts 7a, 7b of the control arm 7. The reference symbol S is the relative distance (normal distance) of the two bearing axes C and D. of the control arm 7 marked. In addition, a schematically illustrated electric motor 12 can be effective on the bearing axis A of the actuating arm 6 on the main body 5a.

Fig. 3c shows a continued from Fig. 3b movement of the flap 4, the two parts 7a, 7b of the control arm 7 were indeed kinked somewhat stronger by the intermediate lever 8, nevertheless, it results in comparison to Fig. 3b only a negligible Change of the distance S between the body-side bearing axis C and the flap-side bearing axis D of the control arm. 7

Fig. 3d shows a continued from Fig. 3c open position of the flap 4. It can be seen a relatively strong buckling of the two parts 7a, 7b of the control arm 7, which is caused by the cranked intermediate lever 8. Can be seen in comparison to Fig. 3c significantly reduced distance S between the body-side bearing axis C and valve side bearing axis D of the control arm 7. Starting from the position shown in Fig. 3d the flap 4, this can be converted into the full open position, wherein by the proposed kinematics of the adjusting mechanism 5, the upper edge 10 can be brought relatively close to the cabinet lid 3a of the furniture body 3.

FIGS. 4a-4c show an alternative embodiment of the invention in a side view. The adjusting mechanism 5 comprises, as in the preceding embodiments, an actuating arm 6, which is pivotably arranged on the bearing axis A on the body side and on the bearing axis B on the valve side. The control arm 7, however, comprises a part 7a, which is designed as a spindle nut and at the same time forms the bearing axis C of the control arm 7. Furthermore, the control arm 7 comprises a spindle 7b, which is movable relative to the part 7a (spindle nut). Furthermore, the control arm 7 comprises a bearing part 7 c, which is pivotally attached to the bearing axis D on the flap-side fitting part 9. The bearing part 7c serves to receive an electric drive, by which the part 7b (spindle) is rotatable and thereby variable in length to part 7a (spindle nut) is movable. The arranged on the bearing part 7c electric drive can be operated again depending on the angular position of the actuating arm 6, so starting from the full closed position of the flap 4 only a slight change in length of the control arm 7, while from a predetermined or predetermined opening angle of the actuating arm 6 to for complete open position of the flap 4, the effective lever arm length of the control arm 7 is changed more than in the first pivoting range of the flap 4.

Fig. 4b shows a shortened compared to Fig. 4a control arm 7 with lower effective Hebelarmlänge, since the part 7b (spindle) projects through the induced motor adjustment in the interior of the furniture body. Of course, it is also possible to arrange the electric drive integrated in the bearing part 7c also on the body side. Likewise, instead of the spindle drive shown, a linearly movable rack can be provided with a rotatable pinion for adjusting the lever arm length of the control arm 7. By the reference numeral 13, a device for detecting the angular position of the actuating arm 6 is schematically characterized, through which the electric drive for adjusting the two parts 7a, 7b is selectively controlled to each other.

Fig. 4c shows an enlarged view of the circled in Fig. 4b area with body-side spindle nut 7a and spindle 7b, which projects into the interior of the furniture body 3. 4.13

Claims (15)

Austrian Patent Office AT506196B1 2010-10-15 Fig. 5 shows a possible embodiment of a spindle drive for the realization of the control arm 7. A can be arranged on or in the bearing part 7c electric drive 14 with drive shaft 14a acts directly or via a translation mechanism on the executed as a spindle Part 7b. By a brought about by the electric drive 14 rotational movement of the spindle, the effective lever arm length of the control arm 7 can be changed, preferably shortened. Fig. 6 shows an example of the change in the effective lever arm length of the control arm 7 as a function of the opening angle a of the actuating arm 6. The abscissa is the Stellarmwinkel a, the ordinate the effective Hebelarmlänge L of the control arm (in%) indicated. In a first, starting from the full closed position opening angle range M1 of the actuating arm 6, the control arm 7 substantially maintains its effective lever arm length L, wherein a parallel movement of the flap is made possible. From about half of the opening angle of the actuating arm α (for example, from about 60 °) takes place in a subsequent to the first pivoting area M1 second pivot area M2 a more pronounced shortening of the control arm 7, whereby the flap 4 kinks over the furniture body 3 strong. The effective Hebelarmlänge L of the control arm 7 may be about 50% of the original effective Hebelarmlänge in the full open position of the actuating arm 6. It should be noted that numerous alternative embodiments for realizing the curve are possible for the person skilled in the art. The invention is not limited to the embodiments shown, but includes or extends to all variants and technical equivalents, which may fall within the scope of the following claims. Also, the position information selected in the description, such as top, bottom, side, us, referred to the immediately described and illustrated figure and are mutatis mutandis transferred to the new situation in a change in position. In the exemplary embodiments shown, a control arm 7 shortening in the course of the movement path of the flap 4 was shown, for reasons of simplicity and ease of understanding, by means of which the flap 4 can be pivoted over the furniture carcass 3 in the course of its opening course. Of course, it is also within the scope of the invention that extends the effective Hebelarmlänge L of the control arm 7 when opening the flap 4, whereby the flap 4 is pivoted away during its opening course and a user located in front of the furniture body 3 user. 1. An actuating mechanism for moving a highly movable flap of a piece of furniture, to be fastened to a furniture body body, wherein an actuating arm is mounted for moving the flap on the one hand to a bearing axis of the body and on the other hand to a bearing axis on a flap to be attached to the fitting part and wherein an additional control arm for moving the flap is provided, wherein during the movement of the actuating arm, the effective lever arm length of the control arm is variable, characterized in that the effective lever arm length (L) of the control arm (7) when opening the actuating arm (6) shortens. 2. adjusting mechanism according to claim 1, characterized in that the control arm (7) has at least two relatively movable parts (7 a, 7 b). 3. adjusting mechanism according to claim 2, characterized in that the at least two parts (7a, 7b) via a hinge axis (F) are interconnected, wherein an additional intermediate lever (8) is provided, between the hinge axis (F) of the at least two Parts (7 a, 7 b) and a hinge axis (E) on the actuating arm (6) is effective. 4. adjusting mechanism according to claim 3, characterized in that the hinge axis (E) of the intermediate lever (8) on the actuating arm (6) approximately in the central region between the two bearing axes (A, B) of the actuating arm (6) is arranged. 5/13 Austrian Patent Office AT506196B1 2010-10-15 5. adjusting mechanism according to one of claims 2 to 4, characterized in that the relative position of the at least two parts (7a, 7b) to each other by a drive device, preferably an electric drive (14), is variable. 6. adjusting mechanism according to claim 5, characterized in that the electric drive (14) via a transmission mechanism an adjustment of the relative position of the at least two parts (7 a, 7 b) causes each other. 7. adjusting mechanism according to claim 6, characterized in that the transmission mechanism comprises a spindle drive. 8. Adjusting mechanism according to one of claims 5 to 7, characterized in that a device (13) for detecting the angular position of the actuating arm (6) is provided, wherein in dependence of this angular position of the actuating arm (6) of the electric drive (14) for adjustment the two parts (7a, 7b) is controllable. 9. adjusting mechanism according to one of claims 1 to 8, characterized in that the effective lever arm length of the control arm (7) in a first adjoining the closed position opening angle range (M1) of the actuating arm (6) changes less than in a subsequent second opening angle range ( M2), which extends to the complete open position of the actuating arm (6). 10. Adjusting mechanism according to one of claims 1 to 9, characterized in that the control arm (7) has a body-side bearing axis (C) which is substantially in the uppermost region of the furniture body (3) and preferably in the region of the front side of the furniture body (3). is arranged. 11. Actuating mechanism according to one of claims 1 to 10, characterized in that the control arm (7) has a flap-side bearing axis (D) which is preferably arranged on the fitting part (9) of the flap (4). 12. adjusting mechanism according to claim 10 or 11, characterized in that during the opening movement of the actuating arm (6) of the relative distance (S) between the body-side bearing axis (C) of the control arm (7) and the flap-side bearing axis (D) of the control arm changeable, preferably reducible, is. 13. Actuating mechanism according to one of claims 10 to 12, characterized in that the body side bearing axis (C) and the flap side bearing axis (D) of the control arm (7) with the flap side bearing axis (A) and the flap side bearing axis (B) of the actuating arm ( 6) form a four-bar linkage. 14. Adjusting mechanism according to one of claims 1 to 13, characterized in that the control arm (7) above the actuating arm (6) is arranged. 15. Furniture with an adjusting mechanism according to one of claims 1 to 14. For this 7-sheet drawings 6/13